Attachment to bakers  ovens



(No Model.)

H.R.GORDON. T ATTACHMENT TO BAKERS OVENS.

' NoQzssms. Patented Apr.11,1882.

UNITED STATES PATENT OFFICE.

- HENRY It. GORDON, OF DETROIT, MICHIGAN.

ATTACHME NT TO BAKERS OVENS.

SPECIFICATION forming part of Letters Patent No. 256,313, dated April 11, 1882,

Application filed October 26,1 881. 1N0 model.) 1

To all whom it may concern:

Be it known that I, HENRY It. GORDON, of Detroit, in the county of Wayne and State of Michigan, have invented an Improvement in BakersOvens, of which the followingisa specification.

The nature of this invention relates to certain new and useful improvements in attachments tobakersovens,anditisespeciallyapplicable to those of the rotary-oven class. Great annoyance is experienced by the baker in the use of the rotary ovens, caused by the deposit of ashes and dust upon the material being baked at such time as the fire is being replenished or enlivened by shaking the grates, and thus stirring up and throwing 05 from the fire a large quantity of ashes, which fills the oven and deposits upon thebaking-shelves, the draft not being sufficient to carry it off; and it is the object of my invention to do away with this annoyance; and to that end the invention consists in the peculiar construction and operation of an adjustable sliding arch to cover over the furnace or furnaces at such timesas may be desired, all as more fully hereinafter set forth.

In the accompanying drawing, which forms a part of this specification, and which fully represents the application of my attachments in sectional perspective, A represents the walls of the furnaces of a rotary oven, within which are constructed the furnaces B and draft-openings a, of the ordinary construction. The upper portion of the oven, in which is arranged the rotating shelves and reel, I do not show, as they form no part of invention.

In the use of the ordinary oven of this class fire is made in the furnaces B, the smoke and products of combustion from which pass down the passages a to the chamber Qbelow the floor of the oven, and thence to the chimneyflue D, and as these fires are keptalive the entire day, generally, it becomes nedessary to replenish by adding more fuel through the proper furnace-door, or to enliven the fire by shaking the grates to remove the ashes which accumulate over the grates and obstruct the draft, and in doing this a greater or lesser amount of ashes is disturbed, which flies up through the open top of the furnaces into the .up the chimney-flue.

oven and lodges upon the crackers or other material being baked upon the rotary reel,

there not being sufficient draft to carry it all down through the draft-openings. This renders the material being baked more or less dirty upon the. outer surfa ces,-while it necessitates a frequent cleaning of the interior of the oven. To avoid these difficulties I arrange within the oven an arch, E, for each furnace,

composed preferably of sheet metal, open at .the bottom and at the front end, the opposite or retracted by means of an endless chain or cable, I, attached to the bar -F and running over pulleys b, which are operated by means of a crank-handle and shaft, J.

Immediately over the furnace-door I provide an air passage or flue, K, adapted to beclosed by a slide or door, L.

When I desire to replenish or enliven the fire I turn the crank-handle J, so that the arches I will be drawn forward, their open ends abutting against the inner face of the front wall of the furnace, while they entirely close over the top of each furnace. I then open the draft-dampers, with which the ovens are ordinarily supplied, and open the doors or slides L and close the lower doors. This admits of a passage of air through the flues Em and beneath the arches and over the top of the fire. Then in raking or replenishing the fire the dust which is thrown off, being confined by the arches, is directed to the draft-openings a, down which it passes into the chamber 0, where it deposits, the smoke and gases passing on I then close the doors L and retract the arches E to the rear of the oven, which allows the furnaces to discharge their heat directly into the oven. It will be seen that by the use of these adjustable arches. I entirely avoid the annoyance referred to, while at the same time I provide a means for regulating the heat of the oven, as itcan readily be-seen that the arches may be drawn over so as to partially close the furnaces or entirely,it' desired, allowing the oven to be heated then merely by such heat as shall be derived from the radiation through the arches.

What I claim as my invention is- 1. A balrers oven the furnaces of which are provided with adjustable sliding arches E, substantially as and for the purposes set forth.

2. An oven, and in combination with the furnaces B thereof, provided with adjustable sliding arches E, the draft-openings K, and outlets a, substantially as and for the purposes specified.

3. An oveu,and in combination with the fur- 

